[cisco-voip] Paris Anyone?

[Eman]

I was just asked this snowy and cold Sunday morning to provide 4 UC/IPT
experts for full time jobs in Paris.  Pay is very generous.  Must have some
presales skills and English language skills are a must.  French is a nice to
have but not required.  (I suspect learning French would be a good idea
though)

If you are interested please send resumes to eman at ccieflyer.com

 

From: cisco-voip-bounces at puck.nether.net
[mailto:cisco-voip-bounces at puck.nether.net] On Behalf Of Ahmed Abd EL-Rahman
Sent: Sunday, January 09, 2011 5:25 AM
To: cisco-voip at puck.nether.net
Subject: Re: [cisco-voip] IP Communicator over VPN problem with windows 7
[Solved]

 

Dear All,

     the problem was solved by the TAC engineer as follows:

 

Problem Cause description:

 

The issue for VPN clients on WIN 7 not being able to connect to IP
communicator could be due to TCP scaling. When ASA receives a packet greater
than 64k then the issue occurs. The workaround is to disable TCP auto
scaling feature on Windows7 but we could also configure ASA to accept larger
size TCP packets.

 

Solving the problem from the ASA:

 

ciscoasa(config)# access-list vpntraffic permit ip <ip address of vpn client
pool> <subnet mask> any

ciscoasa(config)# tcp-map tcpscale

ciscoasa(config-tcp-map)# tcp-options window-scale allow

ciscoasa(config)# class-map tcpwin

ciscoasa(config-cmap)# match access-list vpntraffic

ciscoasa(config)# policy-map global_policy

ciscoasa(config-pmap)# class tcpwin

ciscoasa(config-pmap-c)# set connection advanced-options tcpscale

 

The following is the link for configuring TCP normalization on ASA:

 

http://www.cisco.com/en/US/docs/security/asa/asa82/configuration/guide/conns
_tcpnorm.html

 

 

Solving the problem from the client PC:

 

On the WIN 7 PC open a command prompt window (cmd) and perform the following
command:

C:\>netsh int tcp set global autotuninglevel=disabled

 

I hope this helps everyone faces this problem.

 

 

 

 

Best Regards

 

Ahmed Abd EL-Rahman I Senior Network Engineer 

CCVP, CCNP, CCNA, CCNA-VOICE, IPTX, UCCX, CRMCS, WLSS

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24 x 7 Support Hotline: +966 1 200 5778 | Support Email:
sa_support at bmbgroup.com

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al Murooj I P.O Box 17384 I Riyadh, Saudi Arabia I Tel: +966 1 2005813 I
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Disclaimer: This email message is for the sole use of the intended
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From: cisco-voip-bounces at puck.nether.net
[mailto:cisco-voip-bounces at puck.nether.net] On Behalf Of Ahmed Abd EL-Rahman
Sent: Tuesday, December 28, 2010 5:26 PM
To: cisco-voip at puck.nether.net
Subject: [cisco-voip] IP Communicator over VPN problem with windows 7

 

Dear Gents,

                I'm facing a very strange problem with the IP communicator,
it works normally from the LAN using PCs running WIN XP, Vista, or WIN 7 but
when connecting from outside the network using cisco VPN client it works
normally on WIN XP and Vista but not working with WIN 7 the phone fails to
register or sometimes shown on the CM as registered but in all cases the
phone screen remains blank without any information on it (like the DN or the
line text label) and the phone is not operative (and this is only happens
with WIN 7 over the VPN).

And some status errors shown on the phone like the attached photos.

 

So does anyone faced a similar problem ?

 

 

 

Best Regards

 

Ahmed Abd EL-Rahman I Senior Network Engineer 

CCVP, CCNP, CCNA, CCNA-VOICE, IPTX, UCCX, CRMCS, WLSS

 <http://www.bmbgroup.com/> cid:image001.jpg at 01C99801.5B760420

               Lebanon I Egypt I Algeria I KSA I Libya I Jordan


24 x 7 Support Hotline: +966 1 200 5778 | Support Email:
sa_support at bmbgroup.com

Shahd Investment Center Office #6 I Emam Saud Bin Abdulaziz Rd I Olaya, Hay
al Murooj I P.O Box 17384 I Riyadh, Saudi Arabia I Tel: +966 1 2005813 I
Fax: +966 1 2005811 I Mobile: +966 507920925 I  <http://www.bmbgroup.com/>
www.bmbgroup.com

P     Save a tree. Don't print this e-mail unless it's really necessary

************************************************************
Disclaimer: This email message is for the sole use of the intended
recipient(s) and may contain confidential and privileged information. Any
unauthorized review, use, disclosure or distribution is prohibited. If you
are not the intended recipient, please contact the sender by reply email and
destroy all copies of the original message. 
************************************************************

 

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